Improvement in lathes for turning irregular forms



Shear-Shae! l.

, I. K. WISELL. Improvement in Lathe for Turning Irregular Forms. No. 127,286. Patented May28,1872.

UNITED STATES PATENT OFFICE.

ELI K. WISELL, OF WARREN, OHIO.

IMPROVEMENT IN LATHES FOR TURNING IRREGULAR FORMS- Speclficatlon forming part of Letters Patent No. 127,256, dated May 28, 1872.

Specification describing a new and Improved Lathe for Turning Irregular Forms invented by ELI K. WISELL, of Warren, in the county of Trumbull and State of Ohio.

Figure 1 represents a side elevation of my improved lathe. Fig. 2 is a top view of the same. Fig. 3 is a vertical transverse section on a slightly enlarged scale, the line 0 c, Fig. 2, indicating the plane of section. Fig. 4 is a. detail end view, partly in section, of the machine; and Fig. 5, a detail transverse section on the line k 7:, Fig. 2.

Similar letters of reference indicate corresponding parts.

This invention relates to certain improvements on the spoke-machine for which Letters Patent of the United States were granted to the present applicant on the 3d day of March, 1863, and 14th day of January, 1868. The ob ject of the present invention is, first, to provide adjustable rests for the spokes or things under operation in such manner that the same are only supported behind the cutter-head in whichever direction they may be moved longitudinally. The invention consists in providing two vibrating supports-one on each side of cutter-head-and in connecting their ends with a pivoted beam, which is oscillated to raise the supports alternately, and thus insure the aforementioned object. Another object of the invention is to provide a balance for the vertically-adjustable horizo ntally-reciprocatin g pattern-frame, whereby the same will be held horizontally to keep the pattern and spokes or thin gs nndcr operation in the right position, and whereby it will also be eased oil the pattern to prevent the rapid wear of the same and of the roller with which said pattern is in contact. This second objectis attained by the arrangement of a horizontal rail, which supports the front of the pattern-frame, and is secured at the ends to levers that always keep it in a horizontal position, but are weighted to crowd the rail upward whenever there is an opportunity for so doing, by the elevation of the pattern-frame.

A in the drawing represents the stationary frame of the machine. B is the shaft carrying the cutter-head (J, and hung in hearings transversely in the frame A. The shaft B receives continuous rotary motion by a system ol'helts, a (4-, or equivalent means, from u driving-shall,

D, which is hung in the end of the frame A. E is the reciprocating frame, which carries the pattern F and the articles to be turned. back and forth over the cutter-head. This frame E is, at the back of the machine, pivoted by cars b b to a stationary horizontal rod, (1 on which it can swing whenever it is rais or lowered by the pattern. The latter rests on and moves over a roller, e, which has its bearings in ears that project from the frame A. Thus as the pattern moves over the roller c it will cause the frame E to be swung up when a thicker and down when a thinner part of it comes in contact with said roller, substantial- 1y as set forth in my aforesaid Letters Patent. In cross-pieces of the frame E are the bearings of the several arhors, f f, to which the things to be shapedbe the same tenons, handles, or others-are secured. The arbors f f at one end of the frame E are, by gearings 9 connected with thejonrnals of the pattern 1 so as to turn simultaneously therewith, also as substantially set forth in the aforementioned Letters Patent. The requisite intermittent r0- tary motion is imparted to the pattern and the articles to be shaped by a pawl, h, which is pivoted to a hell-crank, i, that rides over inclines j j on the frame A at the end of the strokes of E, respectively. The pawl is thereby vibrated, and moves a ratchet wheel, 1, whose axle transmits the motion to the gearin g. In front, the reciprocating-frame E rests on a rail, G, which is, by pivoted levers H H, connected with the front of the frame A. The frame E has rollers m m, that support it directly on the rail G, and ride thereon. One of the lovers H has a weighted extension or arm, n. The other lever may also be thus provided. By the weight I on n the rail Gis crowded upward against the frame E, and, whenever the latter is elevated by the action of the pattern, the rail G will follow-in fact assisting in the elevation. Thelevers H being ofequal lengths, insure the constant horizontal position of the rail G, and also of the frame ll that rests thereon. The twisting of the frame E, and the consequent imprnper position ol. the articles to be shaped is thereby entirely avoided. The weight I serves, also, by hearing against the under side of the frame ll to ease the pattern and reduce its weight and friction on the roller 0, thereby preserving both pattern and rollor from rapid wear. J J are two lovers, one on each side of the cutter-head 0- They are pivoted to the frame A at their back ends, while their front ends are turned up and lllV- oted t0 the ends ofa short beam, 0 which is pivoted in the middle to a post ordevice projecting from the frame A. Opposite the cuttar-head the levers J J' are arched on curves of equal diameter as that of the rotary cutters. Opposite the roller 0 each lever J J carries a similar roller, under the pattern F. The beam 0 has its ends turned up or projecting ears formed thereon. On it rests a grooved roller, r, whose arbor sis carried down along the front of the machine in form of a rod, t, and confined or pivoted at its lower end, and weighted, as shown. The frame E carries two projecting lugs, u and u. When the frame E moves to the right, the lug u will, at the end of the stroke, reach the arbor c, and move 1t,so as to carry the roller 'r upon the righthand end of the beam 0, and, by its weight, to incline the latter in the manner shown in Fig. 1. This will cause the lever J to be carried up and J to be carried down. The arched portion of J will then be on a level with the top of the circle described by the cutters. During the return stroke-to the left-of the frame E, the

articles to be shaped will be supl liorted on the arch of the lever J. They are t ereby steedied and proves ted fromztwistiugand oscillating. At the end of this return stroke, the lug u strikes the arbor a and throws the roller r up on the lefthand end of the beam 0 to lower the lever-I out of the way,but elevate J. Then the arch of the lever J will support the articles behind the cutter in the subsequent motion to the right of the frame E.

Having thus described my invention, I claim as new and desire to secure by Letters Paten 1. The levers J J connected with the beam 0, and arranged on opposite sides of the cutter-head O, snbstantmll as and for the purpose herein shown and escribed.

2. The rciler r and weighted-rod 1!, arranged in combination with the beam 0 levers J J, and lugs 11- u', substantially as an for the purpose herein shown and described.

The rail G, secured to the pivoted weighted levers H H, and applied under the pattern frame E substantially as and for the purpose herein shown and described.

Witnesses: ELI K. WISELL.

Enwnnn SPEAK, WM. T. SPEAR- 

